USPC Patent Classifications

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Class 203 distillation: processes, separatory
uspcdescription
203/1203 distillation: processes, separatory/(1) with measuring, testing or inspecting
203/2203 distillation: processes, separatory/(1) with measuring, testing or inspecting (2) of temperature or pressure
203/3203 distillation: processes, separatory/(1) with measuring, testing or inspecting (3) of concentration
203/4203 distillation: processes, separatory/(4) including purging of the system
203/5203 distillation: processes, separatory/(5) separating isotopes or tautomers
203/6203 distillation: processes, separatory/(6) addition of material to distilland to inhibit or prevent reaction or to stabilize
203/7203 distillation: processes, separatory/(6) addition of material to distilland to inhibit or prevent reaction or to stabilize (7) for scale inhibiting or corrosion preventing
203/8203 distillation: processes, separatory/(6) addition of material to distilland to inhibit or prevent reaction or to stabilize (8) for inhibiting or preventing a polymerization reaction
203/9203 distillation: processes, separatory/(6) addition of material to distilland to inhibit or prevent reaction or to stabilize (8) for inhibiting or preventing a polymerization reaction (9) of unsaturated hydrocarbon
203/10203 distillation: processes, separatory/(10) water purification only
203/11203 distillation: processes, separatory/(10) water purification only (11) under pressure or vacuum
203/12203 distillation: processes, separatory/(12) distilling to separate or remove only water
203/13203 distillation: processes, separatory/(12) distilling to separate or remove only water (13) from nitric acid
203/14203 distillation: processes, separatory/(12) distilling to separate or remove only water (14) from organic compound
203/15203 distillation: processes, separatory/(12) distilling to separate or remove only water (14) from organic compound (15) organic acid
203/16203 distillation: processes, separatory/(12) distilling to separate or remove only water (14) from organic compound (15) organic acid (16) acetic
203/17203 distillation: processes, separatory/(12) distilling to separate or remove only water (14) from organic compound (17) aldehyde or ketone
203/18203 distillation: processes, separatory/(12) distilling to separate or remove only water (14) from organic compound (18) alcohol
203/19203 distillation: processes, separatory/(12) distilling to separate or remove only water (14) from organic compound (18) alcohol (19) ethanol
203/20203 distillation: processes, separatory/(20) including defoaming or inhibiting foam
203/21203 distillation: processes, separatory/(21) and recovering heat by indirect heat exchange
203/22203 distillation: processes, separatory/(21) and recovering heat by indirect heat exchange (22) utilizing recovered heat for heating feed
203/23203 distillation: processes, separatory/(21) and recovering heat by indirect heat exchange (22) utilizing recovered heat for heating feed (23) distillation residue as heat source
203/24203 distillation: processes, separatory/(21) and recovering heat by indirect heat exchange (22) utilizing recovered heat for heating feed (24) compressed vapor as heat source
203/25203 distillation: processes, separatory/(21) and recovering heat by indirect heat exchange (25) utilizing recovered heat for heating the distillation zone
203/26203 distillation: processes, separatory/(21) and recovering heat by indirect heat exchange (25) utilizing recovered heat for heating the distillation zone (26) compressed vapor as heat source
203/27203 distillation: processes, separatory/(21) and recovering heat by indirect heat exchange (27) utilizing recovered heat in subsequent step in process
203/28203 distillation: processes, separatory/(28) with chemical reaction
203/29203 distillation: processes, separatory/(28) with chemical reaction (29) including step of adding catalyst or reacting material
203/30203 distillation: processes, separatory/(28) with chemical reaction (29) including step of adding catalyst or reacting material (30) for polymerizing unwanted component
203/31203 distillation: processes, separatory/(28) with chemical reaction (29) including step of adding catalyst or reacting material (31) oxidizing material
203/32203 distillation: processes, separatory/(28) with chemical reaction (29) including step of adding catalyst or reacting material (32) reducing material
203/33203 distillation: processes, separatory/(28) with chemical reaction (29) including step of adding catalyst or reacting material (33) inorganic salt containing oxygen in the anion
203/34203 distillation: processes, separatory/(28) with chemical reaction (29) including step of adding catalyst or reacting material (34) acid
203/35203 distillation: processes, separatory/(28) with chemical reaction (29) including step of adding catalyst or reacting material (34) acid (35) phosphoric or sulfuric acid
203/36203 distillation: processes, separatory/(28) with chemical reaction (29) including step of adding catalyst or reacting material (36) alkaline oxide or hydroxide
203/37203 distillation: processes, separatory/(28) with chemical reaction (29) including step of adding catalyst or reacting material (36) alkaline oxide or hydroxide (37) alkali metal hydroxide
203/38203 distillation: processes, separatory/(28) with chemical reaction (29) including step of adding catalyst or reacting material (38) organic material
203/39203 distillation: processes, separatory/(39) with disparate physical separation
203/40203 distillation: processes, separatory/(39) with disparate physical separation (40) of entrained particles from a vapor or gas
203/41203 distillation: processes, separatory/(39) with disparate physical separation (41) utilizing solid sorbent
203/42203 distillation: processes, separatory/(39) with disparate physical separation (42) utilizing liquid sorption of component from gas or vapor
203/43203 distillation: processes, separatory/(39) with disparate physical separation (43) utilizing liquid-liquid extracting of distillation product
203/44203 distillation: processes, separatory/(39) with disparate physical separation (43) utilizing liquid-liquid extracting of distillation product (44) of distillate
203/45203 distillation: processes, separatory/(39) with disparate physical separation (43) utilizing liquid-liquid extracting of distillation product (44) of distillate (45) and distilling raffinate phase
203/46203 distillation: processes, separatory/(39) with disparate physical separation (43) utilizing liquid-liquid extracting of distillation product (44) of distillate (46) and distilling extractant phase
203/47203 distillation: processes, separatory/(39) with disparate physical separation (47) utilizing removing solid from liquid
203/48203 distillation: processes, separatory/(39) with disparate physical separation (47) utilizing removing solid from liquid (48) by crystallizing
203/49203 distillation: processes, separatory/(49) convective distillation with normally gaseous medium, e.g., air
203/50203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se
203/51203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (51) at least two materials
203/52203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (51) at least two materials (52) mixtures of hydrocarbons
203/53203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (51) at least two materials (53) one material is water
203/54203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (51) at least two materials (53) one material is water (54) a second material is aldehyde or ketone
203/55203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (51) at least two materials (53) one material is water (55) a second material is an alcohol
203/56203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (51) at least two materials (56) one additive an alcohol or ether
203/57203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound
203/58203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (58) heterocyclic
203/59203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (59) amine
203/60203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (60) ester
203/61203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (61) acid
203/62203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (62) aldehyde or ketone
203/63203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (63) alcohol or ether
203/64203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (63) alcohol or ether (64) polyhydroxy alcohol or ether derivative thereof
203/65203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (63) alcohol or ether (65) hydroxy aromatic (e.g., phenol)
203/66203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (63) alcohol or ether (66) methanol
203/67203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (67) halogenated hydrocarbon
203/68203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (68) hydrocarbon
203/69203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (68) hydrocarbon (69) aromatic
203/70203 distillation: processes, separatory/(50) adding material to distilland except water or steam per se (57) organic compound (68) hydrocarbon (70) acyclic
203/71203 distillation: processes, separatory/(71) plural distillations performed on same material
203/72203 distillation: processes, separatory/(71) plural distillations performed on same material (72) one a filming distillation
203/73203 distillation: processes, separatory/(71) plural distillations performed on same material (73) one a distillation under positive pressure or vacuum
203/74203 distillation: processes, separatory/(71) plural distillations performed on same material (73) one a distillation under positive pressure or vacuum (74) distillation of initial distillate
203/75203 distillation: processes, separatory/(71) plural distillations performed on same material (73) one a distillation under positive pressure or vacuum (74) distillation of initial distillate (75) and return of distillation product to a previous distillation zone
203/76203 distillation: processes, separatory/(71) plural distillations performed on same material (73) one a distillation under positive pressure or vacuum (74) distillation of initial distillate (76) including the addition of water or steam
203/77203 distillation: processes, separatory/(71) plural distillations performed on same material (73) one a distillation under positive pressure or vacuum (74) distillation of initial distillate (77) initial distillation under positive pressure or vacuum
203/78203 distillation: processes, separatory/(71) plural distillations performed on same material (73) one a distillation under positive pressure or vacuum (78) and returning distillation product to a previous distillation zone
203/79203 distillation: processes, separatory/(71) plural distillations performed on same material (73) one a distillation under positive pressure or vacuum (79) including the addition of water or steam
203/80203 distillation: processes, separatory/(71) plural distillations performed on same material (73) one a distillation under positive pressure or vacuum (80) initial distillation under positive pressure or vacuum
203/81203 distillation: processes, separatory/(71) plural distillations performed on same material (81) distillation of initial distillate
203/82203 distillation: processes, separatory/(71) plural distillations performed on same material (81) distillation of initial distillate (82) and returning distillation product to a previous distillation zone
203/83203 distillation: processes, separatory/(71) plural distillations performed on same material (81) distillation of initial distillate (83) including the addition of water or steam
203/84203 distillation: processes, separatory/(71) plural distillations performed on same material (84) and returning distillation product to a previous distillation zone
203/85203 distillation: processes, separatory/(71) plural distillations performed on same material (85) including the addition of water or steam
203/86203 distillation: processes, separatory/(86) distillation in apparatus or element of specific material
203/87203 distillation: processes, separatory/(87) with fractional condensation of vapor outside still
203/88203 distillation: processes, separatory/(88) flash vaporization of distilland
203/89203 distillation: processes, separatory/(89) filming of distilland for vaporization
203/90203 distillation: processes, separatory/(90) spraying of distilland into vaporization zone
203/91203 distillation: processes, separatory/(91) vaporization zone under positive pressure or vacuum
203/92203 distillation: processes, separatory/(91) vaporization zone under positive pressure or vacuum (92) including the addition of water or steam
203/93203 distillation: processes, separatory/(91) vaporization zone under positive pressure or vacuum (92) including the addition of water or steam (93) and returning product of distillation step to distillation zone
203/94203 distillation: processes, separatory/(91) vaporization zone under positive pressure or vacuum (94) and returning product of distillation step to distillation zone
203/95203 distillation: processes, separatory/(95) including addition of water or steam
203/96203 distillation: processes, separatory/(95) including addition of water or steam (96) to distillation column
203/97203 distillation: processes, separatory/(95) including addition of water or steam (97) and returning product of distillation step to distillation zone
203/98203 distillation: processes, separatory/(98) and returning product of distillation step to distillation zone
203/99203 distillation: processes, separatory/(99) miscellaneous separatory
203/100203 distillation: processes, separatory/(100) particular type of heating

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